Stitching-machine.



F. A. RISBERG.

STITCHING MACHINE.

APPLICATION mu) MAY 20. I914.

Patented May 25, 1915.

2 SHEETS-SHEET I.

MW e] 6 THE NORRIS PETERS CO.. PHOTC-LITHQ. WASHINGTON, D, C.

F. A. RISBERG.

STITCHING MACHINE.

APPLICATION FILED MAY 20, I914.

Patented May 25, 1915.

2 SHEETS-SHEET 2.

THE NORRIS PETERS CO.. PHOTOLITHO WASHINGTON, D. C,

FRED A. RISBERG, OF CHICAGO, ILLINOIS.

STITCHING-MAGI-IINE.

Application filed May 20, 1914.

To all whom it may concern Be it known that I, FRED A. RISBERG, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Stitching-Machines, of which the following is a specification.

The present invention relates generally to stitching machines and more particularly to the mechanism for positioning the work with reference to the stitching mechanism.

It has been the practice heretofore in positioning pamphlets, magazines and other work which required stapling or other stitching, to position eachpiece of the work, for a given run, at the same point relative to the stitching mechanism. As a result,

when the pieces of work are piled up for trimming or other purposes, the corresponding stitches in the several pieces lie in the same vertical lines and therefore increase the height of the pile at those points considerably beyond its height along the edges to be trimmed. Because of this, the trim is not square or otherwise accurate unless the piles be kept small. In the latter event, the cost of handling is greatly increased over what it would be if larger piles could be used.

The object of the present invention is to provide mechanism by which the different pieces of work will be stopped in different positions relative to the stitching mechanism so that the stitches will be applied in different relative positions in the different pieces. By thus staggering the stitches, the work may be more compactly piled for trimming. In such case, the corresponding stitches or staples do not lie, as before, in a single vertical line, but in a plurality of vertical lines.

Consequently, many more pieces of workcan be put in the same pile and still a satisfactory trim obtained. Because of the ability. to make the piles higher, the cost of handling is greatly'reduced. In carrying out my invention, I prefera; bly provide a shiftable stop which can be shifted so as to engage different pieces of the work in different positions relative to the stitching mechanism. In this way the stitches orstaples in the different pieces of the work are staggered and the advantages r heretofore set forth areobtained.

Specification of Letters Patent.

Patented May 25, 1915. Serial No. 839,817.

For a full understanding of the invention, reference should be had'to the following detailed description taken in connection with the accompanying drawings.

The scope of the invention will be particularly pointed out in the appended claims.

In the drawings I have illustrated my invention in association with the assembling and folding mechanisms of a printing press structure.

Figure 1 is a plan view of a portion of such press structure to which my invention is applied; Fig. 2 is a side elevation of the same; Fig. 3 is a side elevation of a portion of the mechanism shown on an enlarged scale; Fig. 1 is a view of the gearing by which certain portions of the mechanism are operated, parts being shown in section taken on a plane indicated by the line llof Fig. 1; Fig. 5 is a side elevation of the guideway mounting of one of the shiftable fingers; and Fig. 6 is a transverse vertical section of the same taken on a plane indicated by the line 66 of Fig. 1

Throughout these views like characters refer to like parts.

Referring to the drawing in detail, 10 and 11 indicate the side frames of the printing press structure upon which the various parts are mounted. These parts include a collecting cylinder 12 upon which the work is received at regular intervals from the assembling portion of the press (not shown). From thecylinder 12 the work is passed along over the delivery cylinder 13 into the tape pathway formed by a pair of tapes 14 cooperating with a pair of tapes 15. These tapes are located along the edges of-the work support or table 16 and carry the assembled sheets, 1 which are to be stitched, forward to the stitching mechanism 17. As the work advances the shiftable stop fingers 18 come into play to position it with reference to the stitching mechanism, as will be more fully described here inafter. 'As soon as the staples or other ,vided for assembling the diiferent sheets which are to be bound together and then de livering the same to the cylinder 12. Illustrations of such means are shown in United States Patent No. 1,008,568, granted November 14, 1911 to E. P. Sheldon, and No. 1,048,746, granted December 31, 1912 to H. S. Schroeder.

The cylinder 12 has its shaft mounted on the side frames 10and 11 and is provided with a gear wheel 24. The delivery cylinder 13 is similarly mounted and provided with a gear wheel 25 meshing with the gear wheel 24. The tapes 14 pass over suitable tape rollers mounted upon shaft 26, also journaled in the side frames 10 and 11 and provided with a gear wheel 27. These tapes also pass over rollers carried by swinging arms 28 secured to the end member 29 of the frame structure. The cotiperating tapes 15 pass over the driving cylinder 13, guide roller 30, and tape rollers mounted upon the brackets 31 beneath the arms 28. Rollers 32, 33 are mounted upon thetable 16 so as to engage the upper stretch of the tape 15 below the drop rolls 19 and the adjustable rollers 34, respectively.

The rollers 34 are mounted on arms 35' which are adjustably secured upon a shaft 36 which is secured at opposite ends to the drop rolls 19 are mounted upon crank arms 37 secured to a shaft 38 which is likewisejournaled at its opposite ends in bearings V mounted on portions of the side frames 10 and 11. The shaft 38 is also provided with a crank arm 39 which, is connected at its outer end to a forked connecting rod 40. The latter. is provided with a cam roller 41 at its forked end, which cooperates with cam 42 upon a shaft 43 which also is journaled at its opposite ends in the side mem bers 10 and 11 and which is further provided with a beveled gear wheel 44 on the outside ofthe member 11. As the shaft 43 rotates, the connecting rod 40 rocks the shaft 38, and, as a result, the drop rolls 19 are moved toward and from the cooperating rollers 32 so as to applyor withdraw pressure from the tapes. These drop rolls 19 are located so as to engage the tapes where the latter engage the work adjacent tothe stop fingers 18. The drop rolls operate to apply pressure at the time the fingers 18 are lifted up and in so doing insure a quick and positive starting of the work from the position in which it was stitched.

The stop fingers .18 consist of strips of Thus both the drop rolls 19 and the fingers V 18 are given their rocking motion from the shaft 38. The parts are so related thatthe fingers 18 are moved out of engagement with the table 16 as the rolls 19 are moved into engagement with the tapes. The guideway 46 upon the shaft 47 carries a forked guide 53 which extends "downward and forward into position to engage the work and hold it down against the table. The forked ends of the guides 53 respectively embrace the work-engaging. end of the fingers 18. .As the shaft 47 is rocked, the guides .53 are also lifted sufficiently to permit the work to ad.- vance under. the pull exerted by the tapes.

Byreason of the fingers 18 being secured to the guides 45, those fingers may be. shifted back and forth with reference to the guideway 46 and the rock shaft 47 so as to bring their work-engaging ends into di'lferent positions relative to the stitching mechanism 17. This shifting of the fingers 18 is brought about by cam actuated connections. Inea'ch case the guide45 is provided with an upward extension 54 by which it is pivotally connected to the end of a link 55 which is secured at its opposite end to the outer end of a crank arm 56 mounted to rotate freely upon the shaft 47. This crank arm 56 is connected at a point near the shaft 47 with one endof a link 57 which is connected at its opposite end to a crank arm 58 upon a shaft 59, which is suitably mounted in the frame of the machine. There are two such sets ofconnectiorls. The shaft 59 is rocked through the agency'of a crank arm 60, a forked connectingrod 61 and a cam 62 which engages the cam roller 63 on the connecting rod. The cam 62 is mounted on a stud shaft 64 secured to a portion of the frame member 10 and is provided with. a gear wheel 65' which is in mesh with the gearv wheel 66 upon shaft 43. Thus, as shaft .43, through cam'42 and its connections, rocks to 1 so that the fingers 18engage the same point of the table 16 upon every other actuation of the rock shaft; As a result of this to-and-fro movement of the fingers 18, everyv other pamphlet or piece of work hEtS'dtS staples or stitches in one position, while the intermediate pieces have their staples or stitches in an alternate position. When the work is stacked up, the stitches therefore appear as indicated at 66 in the pile of pamphlets beneath the folding rollers in'Fig. 2.

4 The folder knife 21 is mounted upon connected bell crank levers 67 ,68 j'ournaledrespectively'upon shafts 69 and 70 extending between the frame members 10 and 11. A crank 71 and forked connecting rod 72 cooperate with a cam on shaft 43 to actuate'the folder knife in proper time relation to the rest of themechanism.

In the gearing shown in Fig. 4c, the gear wheel. 24: by which the'collecting. cylinder is rotated, may be driven from any suitable source. This wheel is in direct mesh with gear wheel 25 which drives the collecting cylinder. Upon the same shaft is gear wheel 74 which meshes with gear wheel 27 which drives the tape rollersa Upon the same shaft as gear wheels 25 and 7a is a gear wheel 75, which is in mesh with agear wheel 76 upon a stud shaft 77 extending outward from the frame member 11. The stud shaft, 77 carries a beveled gear 78 which meshes with a beveled gear 79 upon a shaft 80 suitably journaled in brackets upon the frame member 11. The forward end of the shaft 10 carries a beveled gear wheel 81 which meshes with the beveled gear wheel 44 on the shaft B. By means of this gearing, the feeding, folding, stitching, deliv ery and stop mechanisms are driven and maintained in the desired time relation to each other. In this description, the stitching mechanism 17 has not been described in detail, nor its driving mechanism indicated, because the same forms no part of the present invention, but it and its timed relation to the feeding, delivery and folding mechanisms are old in the art.

In carrying out my invention, it will be apparent that many alterations and modifications may be made in the structure herein disclosed without departing from. the spirit and scope of my invention. I, therefore, do not wish to limit myself to the specific mat ter disclosed but aim to cover all such alterations and modifications by the terms of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is 1. In a stitching machine, the combination of a work support along which work is adapted to be fed, stitching mechanism operatively related to said support, work-engaging stops on opposite sides of said stitching mechanism and operative to engage said support in a line transverse to the direction of feed to position the work relatively to said stitching mechanism, an actuating shaft substantially parallel to said line, an independent support on said shaft for each of said stops, and means for shifting said stops relatively to said shaft to'change the positions of different pieces of work relative to said stitching mechanism.

2'. In a-stitching machine, the combination-of a work support, stitching mechanism operatively related to said support, a stop for engaging. the work to position it vrela-. tive to said stitching mechanism, a delivery device for .conducting the work from the stitching mechanism, means for bringing said device into operative relation to the work at regular intervals, andmeans bearing atimed relation to said bringing means for shifting said-stop: to change the position of the work relative to said stitching mechanism.

3. .In a stitching machine, the combina tion of a work support along which the work is adapted to be fed, stitching mechanism operatively related to said support means for conveying the work along said support, means for supplying the work at intervals to said conveying means, workengaging stops on opposite sides of said stitching mechanism and operative to engage said support in a line transverse to the direction of feed to position the work relatively to said stitching mechanism, an actuating shaft substantially parallel to said line, an independent support on said shaft for each of said stops, and means bearing a timed relation to said supplying means for shifting said stops relatively to said shaft to change the positions of different pieces of work relative to said stitching mechanism.

4. In a stitching machine, the combination of a work support, stitching mechanism operatively related to said support, a rock shaft, a stop finger movably secured to said shaft, means for rocking said shaft at regular intervals to bring said finger into en gagement with said support to stop the work in operative position relative to said stitching mechanism, and means bearing a timed relation to said rocking means for moving said finger transversely of said shaft to change the position of the engagement of said finger with said support and thus change the position of the work relative to said stitching mechanism. 7

5. In a stitching machine, the combination-of a work support, stitching mechanism operatively related to said support, a rock shaft, a stop finger movably secured to said shaft, work conveying tapes at opposite sides of said support, drop rolls for engag ing said tapes to deliver the work from said stitching mechanism, means for actuating said drop rolls at regular intervals and means bearing a time relation to said roll actuating means to shift said stop finger relative to said shaft to change the position of the work relative to said stitching mechamsm.

6. In a stitching machine, the combination of a work support, stitching mechanism operatively related to said'support, work conveying tapes at opposite sides of said support, means for supplying work at in tervals tov said tapes, a rock shaft, a .stop finger movably' secured to said shaft, and cam actuated mechanism bearing atiine relation tosaid supplying means for shifting said finger transversely of said shaft to change the position of the work relative to said stitching means. 1

7. In a stitching machine, the combination of a horizontal work table, conveyer tapesat the edges of said table for conveying the work along said table, stitching mechanism positioned 7 near the center of said table, a transverse rock shaft in line With said stitching mechanism, guideways secured 'to said rock shaft, stop fingers mounted to slide in said guideways, drop rolls for engaging said tapes, means for supplying the work at intervals to said tapes, a cam and connecting means for actuating said fingers in said guideways, a cam and connecting means for rocking said rock shaft and moving said drop rolls, and gearing connections between said cams and between said cams and supplying means Copies of this patent'may be obtained for whereby a timed relation isinaintained be tween the operations of the associated parts.

8. In a stitching machine, the combination with a work table, stitching mechanism and work feeding means; of a work engagingistop mechanism including a rock shaft, a guid eway secured to said shaft and extending transversely thereof, a stop finger mounted toslide in said guideway; and a cam and connecting means for rocking said 40 ,movement to vary its work-engaging position to variously position the Workrelative to said mechanism.

In witness whereof, I hereunto subscribe my name this 9th day of May, A. D. 1914.

FRED A. RISBERG.

Witnesses: 7

WILLIAM BERGHAHN, I. E.v Lassen.

five cents each, by addressing the Commissioner of- Patents, Washington, D. 0'. v 

